獨創性與價值 – 供应商选择是供应链管理中的关键过程。选择合适的供应商以降低成本并提供高质量的产品非常重要。在文献中，已经提出了几种方法来处理基于PCI的供应商选择。大多数已发表的文章都集中在通过非线性轮廓描述质量特性并考虑双面规范的情况。对于具有单侧规范的非线性轮廓，研究供应商选择问题的文章相对较少。
Purpose – The purpose of this study is to examine two proposed methods, multiple comparisons with the best (MCB) and Bonferroni method, to tackle supplier selection problem when the quality is presented by nonlinear profile with one-sided specification.
Methodology/approach – This study use multiple comparison with the best (MCB) and the difference test statistic to select the best suppliers. In addition, this study applied Bonferroni method to control overall error rate when conducting multiple comparison test. A simulation was conducted in order to find the selection power and the required number of profiles. The programs were written in R language.
Findings – MCB is more sensitive and conservative than Bonferroni method in supplier selection process. MCB also can reject more inferior supplier. Therefore, MCB perform better than Bonferroni. The power test will improve along with the increases both the number of levels and the number of profiles. The least power for MCB will occur when the best supplier is equal to the upper limit of K/2. Meanwhile, the least power for Bonferroni method will happen when there is only one best supplier. The critical value and required number of profiles are tabulated for the convenience decision maker purposes. To give a better insight about the proposed methods, illustrative example also demonstrated.
Originality/value – Supplier selection is essential process in supply chain management. It is important to choose the right supplier in order to reduce cost, and provide high quality products. In literatures, several approaches have been proposed to deal with supplier selection based on PCI. Most of the published articles are focus on the case where quality characteristics is described by nonlinear profile and considering two-sided specification. It is relatively few articles investigate supplier selection problem for nonlinear profile with one-sided specification.
